Petroleum and natural gas industries — Steel drill pipe
Industries du pétrole et du gaz naturel — Tiges de forage en acier
75.180.10 - Exploratory, drilling and extraction equipment. Including offshore structures
77.140.75 - Steel pipes and tubes for specific use. Including hollow steel bars and sections for construction
Anula a: ISO 11961:2008
Anula a: ISO 11961:2008/Cor 1:2009
Es modificada por: ISO 11961:2018/Amd 1:2020
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